php中is_file()函数是用来判断文件是否存在,使用方法也非常的简单,有需要的小伙伴可以参考下。
is_file() 函数检查指定的文件名是否是正常的文件。
is_file — Tells whether the filename is a regular file
用法:
bool is_file ( string $filename ) $file 为必选参数
如果文件存在且为正常的文件则返回 TRUE。
先来看一个实例一:
上例将输出:
bool(true)
bool(false)
实例二:
实例三:
"." AND $file"..") { if (is_file($path.'http://www.jb51.net/'.$file)) { @unlink($path.'http://www.jb51.net/'.$file); } if (is_dir($path.'http://www.jb51.net/'.$file)) { deletefolder($path.'http://www.jb51.net/'.$file); @rmdir($path.'http://www.jb51.net/'.$file); } } } } } ?>
此函数将删除所有文件与文件夹。
以上所述就是本文的全部内容了,,希望大家能够喜欢。

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